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http://dx.doi.org/10.7837/kosomes.2015.21.4.327

Spatial Variability of in situ and GOCI and MODIS Chlorophyll and CDOM in Summer at the East Sea  

Park, Mi-Ok (Department of oceanography, Pukyong National University)
Shin, Woo-Chul (BLUGEN KOREA 107)
Son, Young-Baek (The Jeju International Marine Science Center for Research & Education, KIOST)
Noh, Tae-Geun (Ocean Observation & Information Section, KIOST)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.21, no.4, 2015 , pp. 327-338 More about this Journal
Abstract
Because of impact on the underwater light field, CDOM can influence the accuracy of global satellite-based measurement of ocean chlorophyll and primary productivity. So we investigated the distribution and seasonal variation of CDOM in the East Sea during summer 2009 and 2011. Among them we report two distinctively different summer cases between 2009 and 2011 year, in which showed the different main sources for CDOM. Regulating factors and sources of CDOM in the East Sea were examined. Comparison between in situ and satellite derived Chl a and CDOM were made to find an influence of CDOM on measurement of satellite derived Chl a. Similar pattern and matching of MODIS Chl a with in situ Chl a 2009 was comparable, but significant discrepancy between MODIS Chl a and in situ Chl a was found, when CDOM was high in summer of 2011. GOCI data showed better matching with in situ data for both Chl a and CDOM, compared to MODIS data in summer of 2011. The presence of high CDOM at the surface layer supplied by vertical mixing seems to affect on the overestimation of Chl a by satellite data.
Keywords
CDOM; Chl a; MODIS; GOCI; Spatial variability; The East Sea;
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